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You need 5 bits for a standard capital letter encoding. 2. Create the Encoding Table
# Prompt the user for the secret message secret_message = input("Enter a message to encode: ") # Initialize an empty string to store the final result encoded_message = "" # Loop through each character in the original message for char in secret_message: # Rule 1: Transform lowercase vowels to uppercase and add a marker if char in "aeiou": encoded_message += char.upper() + "X" # Rule 2: Keep uppercase letters but duplicate them elif char in "AEIOU": encoded_message += char + char # Rule 3: Add a custom symbol after spaces to confuse the reader elif char == " ": encoded_message += "-_-" # Rule 4: Leave numbers and punctuation alone, but add a trailing asterisk else: encoded_message += char + "*" # Print the final encoded result print("Encoded message: " + encoded_message) Use code with caution. Code Breakdown 1. Initializing the Accumulator encoded_message = "" Use code with caution. 83 8 create your own encoding codehs answers
Strings in Python are immutable, meaning you cannot change them in place. To modify a string, you must build a brand new one from scratch. Setting up an empty string before the loop allows you to safely piece together the new message character by character. 2. The For-Loop Structure for char in secret_message: Use code with caution.
If you need to encode using this 5-bit scheme: H : 7th index →right arrow 00111 E : 4th index →right arrow 00100 L : 11th index →right arrow 01011 L : 11th index →right arrow 01011 O : 14th index →right arrow 01110 (Space) : 26th index →right arrow 11010 W : 22nd index →right arrow 10110 O : 14th index →right arrow 01110 R : 17th index →right arrow 10001 L : 11th index →right arrow 01011 D : 3rd index →right arrow 00011 This public link is valid for 7 days
If your CodeHS autograder is throwing errors, check for these frequent mistakes.
Here is a general example of a variable-length encoding scheme for the alphabet and space, provided in an answer for a related problem: Can’t copy the link right now
: Every character must have a unique binary code of the same length. 📏 Calculating the Minimum Bits
Receiving a prompt and returning the modified result dynamically. Core Logic: How to Design an Encoding Algorithm
This comprehensive guide breaks down the problem, explains the underlying logic, and provides clean, structured solutions to help you ace the assignment. Understanding the Goal of Exercise 8.3.8
Pay close attention to CodeHS assignment instructions. Check if the autograder expects the encoded output as a true Python list of integers [1, 2, 3] or as a single string separated by spaces or dashes "1-2-3" . Conclusion